JPH0619518A - Program calling system - Google Patents

Abstract

PURPOSE:To make a machining program of an CNC high in flexibility by easily changing the calling order of the machining program. CONSTITUTION:Group data 131 consist of subprograms O0010-O0050, which are given a group number '0001'. Further, a call order number S and a repetitive execution frequency T are set for each of the subprograms. The subprograms are called in order according to the call order numbers S and repeatedly executed as many times as the repetitive execution frequencies T given to the subprograms. The call order numbers S and repetitive execution frequencies T are varied by an operator through a keyboard, etc. Consequently, the order of the caging of the subprograms from a main program can easily be varied. The machining program itself can, therefore, be made high in flexibility.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a program calling method for calling a CNC machining program, and more particularly to a program calling method capable of easily changing the execution order of subprograms.

[0002]

2. Description of the Related Art Generally, when a CNC (Numerical Control Unit) machine tool is used to machine a workpiece based on a machining program, a method of calling many subprograms from a main program is adopted. In this method, each subprogram is managed in program number units, and the calling is mainly performed by using the M code, for example, in the form of "M98P program number". The execution order of the subprograms is the calling order in the main program.

FIG. 5 is a diagram showing a subprogram call in a conventional main program. As shown in the figure, the main program "O0001" is made up of subprograms O0010, O0020, O0030, O00 by M code.
40 and O0050 are called in sequence, and subprogram O0
010 and the like are executed in that order. It should be noted that "L" in the program statement indicates the number of times the subprogram O0010 or the like is repeatedly executed. Further, the subprogram call by the M code ends at "M30".

[0004]

By the way, in actual machining, there are cases where the calling sequence designated by the main program must be changed. For example, there is a case where a part of the calling sequence is changed to process another work. In that case, in the conventional method, it is necessary to create a new main program in which the calling order is changed, or to change the flow of the main program by a condition determination statement (IF statement) for changing the calling order. For this reason, the calling order of the subprograms cannot be easily changed, and the conventional machining programs lack flexibility in that respect.

The present invention has been made in view of the above circumstances, and provides a program calling method in which the calling sequence can be easily changed and the machining program can be made highly flexible. With the goal.

[0006]

In order to solve the above-mentioned problems, the present invention provides a program calling method for calling a CNC machining program, in which group data composed of subprograms with rewritable calling sequence numbers is added. A program call system characterized by comprising group data storage means for storing and subprogram call means for sequentially calling and executing the subprograms according to the calling sequence number when the group data is called in a main program. , Provided.

[0007]

The group data is composed of a plurality of subprograms, and each subprogram has a rewritable call sequence number. This group data is stored in the group data storage means. When group data is called during execution of the main program,
The subprogram calling means sequentially calls and executes the subprograms according to the calling sequence number in the group data. In this way, the subprogram is called and executed according to the calling sequence number in the group data. The calling sequence number can be easily changed by the operator using a keyboard or the like. Therefore, the calling sequence for calling the subprograms from the main program can be easily changed, and as a result, the machining program becomes highly flexible.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 2 is a diagram showing an example of group data according to the present invention. As shown in the figure, the group data 130
Is composed of subprograms O0010 to O0050, and the group number "0001" is given to the whole.
Further, a calling sequence number S and a repeat execution count T are set in each subprogram O0010 and the like. The group data 130 is created in advance by the operator and stored in the RAM 13 (FIG. 4) described later.

The group data 130 is simply called and executed by using the group number in the main program as follows. O0001; M98 P10001; (Calling the group number is
It is performed by "10000 + group number". ) M30; As described above, since the subprograms O0010 and the like are collectively called by using the group number of the group data 130, the subprogram can be called easily as compared with the conventional method shown in FIG. You can Next, a method of changing the calling sequence of the subprogram O0010 and the like and the number of repeated executions will be described.

FIG. 1 is a diagram showing a case where the calling order of subprograms and the number of times of repeated execution are changed. In the figure, the group data 131 is obtained by changing the calling sequence number S and the number of repeated executions T of the group data 130 shown in FIG. The calling sequence number S and the number of repeated executions T are changed by the operator using the keyboard 17 (FIG. 4) or the like. The main program at that time is the same as the main program “O0010” described above, and the group data 131 is “M98 P1000”.
1 ”. Subprogram O0010
Etc. are sequentially called in accordance with the calling order number S in the group data 131, and are repeatedly executed for the number of times of repeated execution T given to the subprogram.

As described above, in this embodiment, the subprogram is called according to the calling sequence number S in the group data 131, and the subprogram is repeatedly executed T times.
Just repeat. The calling sequence number S and the number of times of repeated execution T can be easily changed by the operator using a keyboard or the like. Therefore, the calling sequence for calling the subprogram from the main program can be easily changed. Therefore, the processing program itself can be made highly flexible.

FIG. 3 is a diagram showing a flow chart for executing the program calling method of the present invention. In the figure, the numerical value following S indicates a step number. [S1] Subprogram call command, that is, "M9
It is determined whether or not there is a call command by "8". If there is a call command, the process proceeds to step S2, and if not, the present program ends. [S2] It is determined whether the value of P following "M98" is 10001 or more. If it is 10001 or more, the process proceeds to step S3, and if not, the process proceeds to step S10. [S3] The group number is calculated by subtracting 10000 from the value of P. [S4] The group data of the group number obtained in step S3 is read, and the subprograms are rearranged in the order of the calling sequence number S in the group data. The order is called a calling order N. [S5] The initial value of the calling order N is set, and N = 1 is set. [S6] The subprogram with the calling order N is called. [S7] It is determined whether or not the sub-program has been repeatedly executed the number of times T of repetitions. If it has been executed by the repeat execution count T, step S8
Otherwise, the process returns to step S6. [S8] The value 1 is added to the calling order N. [S9] It is determined whether the calling sequence N exceeds the maximum value of the calling sequence number S. If it exceeds, this program is terminated as it is, and if not, the process returns to step S6. [S10] A normal subprogram is called.

FIG. 4 is a schematic block diagram of the hardware of the CNC for implementing the present invention. The processor 11 is R
CN according to the system program stored in OM12
Control C as a whole. EPROM or EEPROM is used for the ROM 12. SRAM in RAM13
Are used to store various data or input / output signals. In addition, as described above, the group data 13
0 and 131 are stored. CM backed up by a battery not shown in the non-volatile memory 14
The OS is used, and the parameters and the like to be retained even after the power is turned off are stored.

The graphic control circuit 15 converts the digital signal into a signal for display and gives it to the display screen 16. As the display screen 16, a CRT or a liquid crystal display device is used. The keyboard 17 is composed of symbolic keys, numerical keys, etc., and necessary figures and data are input using these keys. The display screen 16 and the keyboard 17 are used to create the group data 130 and change the calling sequence number S and the repeat execution count T.

A PMC (Programmable Machine Controller) 20 receives an M function signal or the like via a bus 21,
Processing is performed by the sequence program, an output signal is output, and the machine tool 25 is controlled. In addition, receiving the input signal from the machine side, processing by the sequence program,
The necessary input signals are transferred to the processor 11 via the bus 21.

The axis control circuit 18 receives the axis movement command from the processor 11 and outputs the axis command to the servo amplifier 19. The servo amplifier 19 receives the movement command and drives the servo motor of the machine tool 25. The above components are connected to each other by a bus 21.

[0017]

As described above, in the present invention, group data is formed by a plurality of subprograms, and a rewritable calling sequence is given to each subprogram. When the group data is called during the execution of the main program, the subprograms are sequentially called and executed according to the calling sequence number. The calling sequence number can be easily changed by the operator using a keyboard or the like. Therefore, the calling sequence for calling the subprogram from the main program can be easily changed. Therefore, the processing program itself can be made highly flexible.

[Brief description of drawings]

FIG. 1 is a diagram showing a case where a calling order of subprograms and a number of times of repeated execution are changed.

FIG. 2 is a diagram showing an example of group data according to the present invention.

FIG. 3 is a diagram showing a flowchart for executing the program calling method of the present invention.

FIG. 4 is a schematic configuration diagram of hardware of a CNC for implementing the present invention.

FIG. 5 is a diagram showing a subprogram call in a conventional main program.

[Explanation of symbols]

 11 processor 12 ROM 13 RAM 14 non-volatile memory 15 graphic control circuit 16 display screen 17 keyboard 18 axis control circuit 19 servo amplifier 20 PMC 21 bus 25 machine tool 130, 131 group data S calling sequence number T number of repeated executions

Claims (2)

[Claims] 1. In a program calling method for calling a CNC machining program, group data storage means for storing group data composed of subprograms having rewritable calling sequence numbers, and the group data in the main program And a subprogram calling means for sequentially calling and executing the subprograms according to the calling sequence number when called. 2. The program calling system according to claim 1, further comprising sub-program repeat execution means for repeatedly executing the sub-program according to the number of times of repeated execution given to the sub-program.